How about getting him a custom-made jigsaw puzzle? You could have a favorite photo of the two of you or a special memory turned into a puzzle that you can both enjoy putting together. There are many online retailers that specialize in custom puzzles with a selection of puzzle sizes and piece counts to choose from. You could even make this a fun activity for Valentine's Day by working on the puzzle together while enjoying some of his favorite snacks or drinks.
Or you can get him a star map with the date of your first kiss.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.